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Li-Fi会取代Wi-Fi吗
Will Li-Fi be the new Wi-Fi？
Li-Fi, as it has been dubbed, has already achieved blisteringly high speeds in the lab. Researchers at the Heinrich Hertz Institute in Berlin, Germany, have reached data rates of over 500 megabytes per second using a standard white-light LED. Haas has set up a spin-off firm to sell a consumer Li-Fi transmitter that is due for launch next year. It is capable of transmitting data at 100 MB/s - faster than most UK broadband connections.
Li-Fi在实验室里已经实现了超高速的数据传输。在德国柏林的海因里希·赫兹研究所，研究人员们已经用白光LED达成了每秒500MB数据传输速率。Haas设立了一家Spin-Off公司，向顾客出售预计在明年投产的Hi-Fi发信机。这种发信机的数据传输速率可达100MB/S，远比英国的大多数宽带要快。
"There are around 14 billion light bulbs worldwide, they just need to be replaced with LED ones that transmit data," says Haas. "We reckon VLC is a factor of ten cheaper than Wi-Fi." Because it uses light rather than radio-frequency signals, VLC could be used safely in aircraft, integrated into medical devices and hospitals where Wi-Fi is banned, or even underwater, where Wi-Fi doesn't work at all.
“世界上大概有140亿个灯泡，它们仅需换成能发送数据的LED就行了”，Haas如是说，“我们猜想Li-Fi要比Wi-Fi廉价10倍，因为它使用光而非无线电频率信号。Li-Fi可以在飞机上放心使用，在禁止Wi-Fi的医院里还能植入医疗设备中，Li-Fi还能在水下使用，Wi-Fi可不行”
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